U.S. patent application number 17/608647 was filed with the patent office on 2022-07-21 for insulating-stripping tool designed as a hand tool, cutting part for an insulation-stripping tool and method for stripping a cable.
This patent application is currently assigned to Rennsteig Werkzeuge GmbH. The applicant listed for this patent is Rennsteig Werkzeuge GmbH. Invention is credited to Marko ENDTER, Georg HOLLAND-MORITZ, Gerhard KOENIG.
Application Number | 20220231491 17/608647 |
Document ID | / |
Family ID | |
Filed Date | 2022-07-21 |
United States Patent
Application |
20220231491 |
Kind Code |
A1 |
HOLLAND-MORITZ; Georg ; et
al. |
July 21, 2022 |
INSULATING-STRIPPING TOOL DESIGNED AS A HAND TOOL, CUTTING PART FOR
AN INSULATION-STRIPPING TOOL AND METHOD FOR STRIPPING A CABLE
Abstract
An insulation-stripping tool designed as a hand tool for
stripping insulation from a cable has a first insulation-stripping
cutter for stripping the insulation transversely to a longitudinal
direction of the cable and a second insulation-stripping cutter for
stripping the insulation in the longitudinal direction of the
cable.
Inventors: |
HOLLAND-MORITZ; Georg;
(Steinbach-Hallenberg, DE) ; KOENIG; Gerhard;
(Steinbach-Hallenberg, DE) ; ENDTER; Marko;
(Steinbach-Hallenberg, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Rennsteig Werkzeuge GmbH |
Steinbach-Hallenberg |
|
DE |
|
|
Assignee: |
Rennsteig Werkzeuge GmbH
Steinbach-Hallenberg
DE
|
Appl. No.: |
17/608647 |
Filed: |
May 6, 2020 |
PCT Filed: |
May 6, 2020 |
PCT NO: |
PCT/EP2020/062619 |
371 Date: |
November 3, 2021 |
International
Class: |
H02G 1/12 20060101
H02G001/12; H02G 1/00 20060101 H02G001/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 6, 2019 |
DE |
102019111703.8 |
Claims
1-16. (canceled)
17: An insulation-stripping tool designed as a hand tool for
stripping insulation from a cable, comprising: a first
insulation-stripping cutter configured for stripping the insulation
transversely to a longitudinal direction of the cable, and a second
insulation-stripping cutter configured for stripping the insulation
in the longitudinal direction of the cable, wherein the first
insulation-stripping cutter is mounted a pivoting body for pivoting
movement about a pivot axis between a cutting engagement position
and a release position, wherein the second insulation-stripping
cutter is formed on the same pivoting body and is pivotable about
the same pivot axis as the first insulation stripping cutter,
wherein the second insulation-stripping cutter is offset
circumferentially to the first insulation-stripping cutter of the
pivoting body in such a manner that the pivoting of the pivoting
body by about 90 degrees brings about a change of the first
insulation-stripping cutter into the release position and a change
of the second insulation-stripping cutter from a release position
into a cutting engagement position.
18: An insulation-stripping tool designed as a hand tool for
stripping insulation from a cable, comprising: a first
insulation-stripping cutter configured for stripping the insulation
transversely to a longitudinal direction of the cable, and a second
insulation-stripping cutter configured for stripping the insulation
in the longitudinal direction of the cable, wherein the first
insulation-stripping cutter is pivotably mounted for movement
between a cutting engagement position and a release position, and
wherein the first insulation-stripping cutter is movable between
the cutting engagement position and the release position merely by
action via a pulling movement on the cable or on the
insulation-stripping cutter itself.
19: A method for stripping insulation from a cable using an
insulation-stripping tool configured as a hand tool, wherein the
insulation-stripping tool comprises a first insulation-stripping
cutter and a second insulation-stripping cutter, comprising:
bringing the first insulation-stripping cutter into engagement with
insulation of the cable in a closed position of the hand tool,
stripping the insulation in a circumferential direction by turning
the cable about its longitudinal axis, and pulling on the cable
while maintaining the closed position of the hand tool to obtain
pivoting displacement of the first insulation-stripping cutter into
a release position while pivoting the second insulation-stripping
cutter into a cutting engagement position.
20: A cutting part for an insulation-stripping tool designed as a
hand tool for stripping insulation from a cable transversely to its
cable longitudinal direction and also for stripping the insulation
in the cable longitudinal direction, comprising; a first
insulation-stripping cutter and a second insulation-stripping
cutter, wherein the first and second insulation-stripping cutters
are formed on one pivoting body pivotable about a pivot axis or
wherein the first insulation-stripping cutter is fastened to a
first pivoting body while the second insulation-stripping cutter is
formed on a second pivoting body and the two pivoting bodies are
motion-coupled via a rigid connection so that each pivoting
movement of the one pivoting body results in a corresponding
pivoting movement of the other pivoting body, wherein the first
insulation-stripping cutter is configured for a cut in the
direction of the pivot axis and the second insulation-stripping
cutter is configured for a cut transversely to the pivot axis and
wherein the first insulation-stripping cutter is movable merely by
action on the insulation-stripping cutter itself between the
cutting engagement position and the release position, wherein this
action can be performed merely via a pulling movement on the
cable.
21: The insulation-stripping tool according to claim 17, wherein
the pivot axis (y) of the first insulation-stripping cutter runs
transversely to the longitudinal direction (l) of the cable.
22: The insulation-stripping tool according to claim 17, wherein
the pivot axis of the first insulation-stripping cutter does not
intersect the cable.
23: The insulation-stripping tool according to claim 17, wherein
the first insulation-stripping cutter is movable between the
cutting engagement position and the release position by action on
the insulation-stripping cutter itself.
24: The insulation-stripping tool according to claim 17, wherein
the first insulation-stripping cutter has an arcuate course for
covering a circumferential partial area of the cable.
25: The insulation-stripping tool according to claim 18, wherein
the first insulation-stripping cutter and second
insulation-stripping cutter are pivotable about different pivot
axes.
26: The insulation-stripping tool according to claim 18, wherein
the first insulation-stripping cutter and second
insulation-stripping cutter are pivotable about the same pivot
axis.
27: The insulation-stripping tool according to claim 18, wherein
the first insulation-stripping cutter and second
insulation-stripping cutter are formed on one pivoting body.
28: The insulation-stripping tool according to claim 18, wherein
the first insulation-stripping cutter and second
insulation-stripping cutter are offset in a circumferential
direction.
29: The insulation-stripping tool according to claim 17, wherein
the tool has a pliers-like configuration with pliers legs and
wherein the first insulation-stripping cutter is formed on working
areas of both pliers legs.
30: The insulation-stripping tool according to claim 17, wherein
two hollow-body partial shells are provided, which are arranged
pivotably about a common pivot axis, and wherein the first
insulation-stripping cutter is formed on one of the hollow-body
partial shells.
31: The insulation-stripping tool according to claim 30, wherein
the hollow-body partial shells form a receiving cavity for the
cable and wherein the first insulation-stripping cutter and the
second insulation-stripping cutter are arranged so as to be
assigned to the same receiving cavity.
Description
AREA OF TECHNOLOGY
[0001] The invention relates firstly to an insulation-stripping
tool designed as a hand tool for stripping insulation from a cable,
comprising a first insulation-stripping cutter for stripping the
insulation transversely to a longitudinal direction of the cable
and a second insulation-stripping cutter for stripping the
insulation in the longitudinal direction of the cable.
[0002] The invention further relates to a cutting part for an
insulation-stripping tool configured as a hand tool.
[0003] Furthermore, the invention relates to a method for stripping
insulation from a cable using an insulation-stripping tool
preferably configured as a hand tool, wherein the
insulation-stripping tool comprises a first insulation-stripping
cutter and a second insulation-stripping cutter.
PRIOR ART
[0004] For stripping and removing insulation from a cable, it is
known to use insulation-stripping tools, which comprise at least
one first insulation-stripping cutter for performing a separating
cut in the insulation transversely to the longitudinal extension of
the cable. In particular in difficult-to-access regions, for
example, distributor boxes etc. there is a need to also cut into or
cut open the section to be stripped of insulation in the
longitudinal direction of extension. This facilitates the removal
of the insulation section. For this purpose, known
insulation-stripping tools have a second insulation-stripping
cutter, which, if necessary, serves to perform a cutting-open of
the insulation in the longitudinal direction of the cable.
[0005] In this connection, reference is made, for example, to DE 38
08 950 A1. Known from this is an insulation-stripping tool, which
substantially consists of two half-shell-like jaws, which are
pivotable about a common axis toward one another into a closed
position. The insulation-stripping tool, which is configured
overall as elongated, has respectively one first
insulation-stripping cutter in the area of one end assigned to the
inner surfaces of the half-shells pointing toward one another. A
cable inserted between the half-shells is cut into by the first
insulation-stripping cutter in the area of its insulation upon
closure of the half-shells, wherein this cutting process is
assisted in particular by a turning of the insulation-stripping
tool about the longitudinal axis by approximately 180.degree. to
one side and to the other side. For separation of the insulation in
the longitudinal direction, the cable is initially taken from the
insulation-stripping tool and inserted again turned overall by 180
degrees perpendicular to the longitudinal extension, after which a
second insulation-stripping cutter arranged in the area of the
other end of the insulation-stripping tool can be used for cutting
open the insulation in the longitudinal direction.
[0006] Another insulation-stripping tool is known from DE 44 11 028
C1. This is configured to be pliers-like, accordingly comprising
two pliers legs, wherein two first insulation-stripping cutters
pointing toward one another are provided at one free end of the
pliers leg for stripping the insulation transversely to the
longitudinal direction of the cable. For stripping the insulation
in the longitudinal direction of the cable, the cable can remain in
the pliers in the pliers closed position after carrying out the
stripping transversely to the longitudinal direction of the cable.
A second insulation-stripping cutter is actively brought into an
active position by the user. For this purpose, a slider which can
be actuated with the thumbs, for example, is provided which can
bring the second insulation-stripping cutter about a geometric axis
of rotation from a concealed position into a lowered position
penetrating into the insulation.
SUMMARY OF THE INVENTION
[0007] With a view to the previously described prior art, an object
of the invention is seen in further improving an
insulation-stripping tool of the type in question in a favorable
manner for handling. The object also consists in providing a
cutting part, which enables a favorable handling of the hand tool.
Furthermore, it is the object of the invention to provide a method,
which enables a favorable stripping of the insulation from a cable
in terms of handling.
[0008] A possible solution of the object according to a first
inventive idea is given in an insulation-stripping tool in which
the focus is on the fact that the first insulation-stripping cutter
is mounted pivotably for movement between a cutting engagement
position and a release position.
[0009] As a result of the proposed configuration, an
insulation-stripping tool of the type in question is provided which
allows favorable use in terms of handling. The first
insulation-stripping cutter of the tool can, for example, for
carrying out further work with the tool, be favorably pivoted into
a position in which this first insulation-stripping cutter
preferably does not penetrate or does not substantially penetrate
in a cutting manner into the insulation of the cable inserted into
the insulation-stripping tool. By this means, for example, in a
possible tool closure position, which is used in the usual manner
for stripping the insulation transversely to the longitudinal
direction of the cable, a displacement of the cable in the
longitudinal direction of the cable can be performed by pivoting
the first insulation-stripping cutter into the release position.
For example, after pivoting the first insulation-stripping cutter
back into the cutting engagement position hereafter, a possible
second cut can be made in the circumferential direction of the
cable or alternatively a longitudinal cut for stripping the
insulation in the longitudinal direction of the cable using the
second insulation-stripping cutter.
[0010] With regard to the cutting part, a possible solution of the
object according to a first inventive idea is given in which the
focus is on the fact that a first insulation-stripping cutter and a
second insulation-stripping cutter are formed on a pivoting body
pivotable about a pivot axis, wherein the first
insulation-stripping cutter is configured for a cut in the
direction of the pivot axis and the second insulation-stripping
cutter is configured for a cut transversely to the pivot axis.
[0011] Preferably in this case the insulation-stripping cutters are
arranged offset in the circumferential direction on the pivoting
body. Without such an offset, a turning of the cable alone about
its longitudinal axis is certainly almost impossible when
insulation-stripping cutters are inserted into the insulation of a
cable. On the other hand, in certain cases of application, possibly
when the insulation-stripping cutters are favorably matched in the
transverse direction to the diameter of the cable and the thickness
of the insulation, such a situation can be accepted. In this case,
a T-shaped incision of the two insulation-stripping cutters then
usually results if these, as it were, have grown together.
[0012] With the offset in the circumferential direction, this
ultimately also results in a T-shaped cutting pattern but with a
non-cut area between the cut in the longitudinal direction and the
cut in the transverse direction of the cable.
[0013] As a result of the proposed configuration, an advantageous
cutting part for an insulation-stripping tool is provided. The
cutting part can be used both for stripping insulation from a cable
transversely to a longitudinal direction of the cable and also for
stripping the insulation in the longitudinal direction of the
cable. To this end, the cutting part has two correspondingly
configured and aligned insulation-stripping cutters, of which in
each case, one can be pivoted into the respective cutting position
or can be pivoted out from this for deactivation. Preferably both
insulation-stripping cutters can be pivoted into the respective
cutting position or can be pivoted out from this cutting position.
In the case of a lack of offset of the insulation-stripping cutters
on the pivoting body in the circumferential direction, the second
insulation-stripping cutter is preferably configured to be so long
in the circumferential direction of the pivoting body that, for
example, with a pull on the cable, an incision is made with a
further region of the insulation-stripping cutter, which initially
had not yet been inserted into the insulation.
[0014] The geometric pivot axis of the cutting part comprising the
first and the second insulation-stripping cutter preferably extends
in a parallel plane to a cutting plane predefined by the first
insulation-stripping cutter. The geometric pivot axis can also
extend within this cutting plane. Furthermore, the cutting plane
predefined by the second insulation-stripping cutter can be
directed transversely to the geometric pivot axis of the cutting
part.
[0015] The offset in the circumferential direction between the
first and the second insulation-stripping cutter can, as is also
preferred, be more than 45 degrees, in particular approximately 75
to 105 degrees, thus for example, approximately 90 degrees,
furthermore optionally however also more than 90 degrees as far as
180 degrees or more.
[0016] One possible solution of the object in relation to the
method according to a further inventive idea is given in which the
focus is on the fact that the first insulation-stripping cutter is
brought into engagement with the insulation of the cable and is
brought from the cutting engagement position into its release
position by pulling on the cable.
[0017] As a result of the configuration according to the invention,
a method favorable for handling is obtained. The cable to be
stripped of insulation can also preferably remain in the
insulation-stripping tool after performing the cut performed in the
circumferential direction of the cable using the first
insulation-stripping cutter. Preferably the first
insulation-stripping cutter is brought from the cutting engagement
position into its release position merely by pulling on the cable,
preferably while pulling out from or pulling through the
insulation-stripping tool. The first insulation-stripping cutter is
thus brought into a position substantially or completely outside
the insulation circumference.
[0018] This displacement of the first insulation-stripping cutter
from the cutting engagement position into its release position can,
as is also preferred, be carried out as a result of pivoting the
first insulation-stripping cutter about a geometric pivot axis.
[0019] The features of the previously described independent claims
are important both in each case substantially for themselves and
also in any combination with one another, wherein further features
of an independent claim can be combined with the features of a
further independent claim or with features of several independent
claims, furthermore also with only individual features of one or
more of the further independent claims.
[0020] Further features of the invention are also explained in the
description of the figures, frequently in their preferred
assignment to the subject matter of claim 1 and/or the further
independent claim(s) or to features of further claims. They can,
however, also be important in an assignment to only individual
features of claim 1 and/or the further independent claims or the
respective further claim or in each case independently.
[0021] The pivot axis, in particular geometric pivot axis, of the
first insulation-stripping cutter can, as is also preferred, run
transversely to the longitudinal direction of the cable. A pulling
movement of the cable for pivoting the first insulation-stripping
cutter from the cutting engagement position into the release
position is accomplished in the usual manner in the longitudinal
direction of the cable and thus transversely directed to the
geometric pivot axis of the first insulation-stripping cutter,
whereby as a result of the engagement of the first
insulation-stripping cutter in the insulation of the cable, a
pulling on the cable brings about a pivoting displacement of the
first insulation-stripping cutter by entrainment as far as the
release position.
[0022] The pivot axis of the first insulation-stripping cutter can
furthermore be aligned so that this does not cut the cable.
Accordingly it is preferred that the pivot axis of the first
insulation-stripping cutter runs outside with reference to a
cross-section through the cable inserted in the
insulation-stripping tool and further preferably at a distance from
the outer circumferential line of the insulation of the cable.
Optionally the geometric pivot axis of the first
insulation-stripping cutter can touch the insulation of the cable
in such a cross-sectional view.
[0023] The first insulation-stripping cutter can be moved between
the cutting engagement position and the release position merely by
action of the insulation-stripping cutter itself. This action can
be provided merely via the pulling movement on the cable.
[0024] In one possible embodiment, the first insulation-stripping
cutter can have a rectilinearly stretched profile. This rectilinear
profile can be directed parallel to the geometric pivot axis of the
first insulation-stripping cutter, alternatively for example,
enclosing an acute angle of a few angular degrees, for example, 2,
3 or 5 or more degrees to the geometric pivot axis.
[0025] The first insulation-stripping cutter can also have an
arcuate profile for embracing a circumferential partial area of the
cable, in particular the insulation. When considered in a view in
which the geometric pivot axis is represented linearly, a concave
arc profile of the insulation-stripping cutter can thus be given,
preferably with a radius which remains the same throughout. This
radius can, as is also preferred, be selected to be larger than the
radius of a largest permissible cable radius in relation to the
tool having the first insulation-stripping cutter.
[0026] The arcuate profile can furthermore also be composed of
different radius portions over the extension length of the
insulation-stripping cutter. In addition, in the sense of the
invention, an arcuate profile is also obtained, for example, with
an overall v-shaped insulation-stripping cutter, which is
configured to be approximately notch-shaped in relation to the
resulting cutting plane.
[0027] In particular in relation to the insulation-stripping tool,
it can be provided that the first and second insulation-stripping
cutters are pivotable about different pivot axes. These pivot axes,
in particular the geometric pivot axes, of the two
insulation-stripping cutters can, as is also preferred, be aligned
in the same direction. Furthermore, in such an arrangement the
first and second insulation-stripping cutters can be
motion-coupled, so that a pivoting of the first
insulation-stripping cutter from the cutting engagement position
into the release position can at the same time bring about a
pivoting of the second insulation-stripping cutter from the release
position into the cutting engagement position.
[0028] This can also be achieved in a configuration in which the
first and second insulation-stripping cutter are pivotable about
the same pivot axis. In this case, the two insulation-stripping
cutters can have separate pivoting bodies, which however enable a
pivoting about the same pivot axis.
[0029] According to a preferred embodiment, the first and second
insulation-stripping cutters are formed on the same pivoting body.
By this means, a forced pivoting displacement of the second
insulation-stripping cutter is preferably achieved with a
corresponding pivoting displacement of the first
insulation-stripping cutter. The first and second
insulation-stripping cutter can in this case preferably be arranged
offset with respect to one another in the circumferential direction
of the pivoting body in relation to the geometric pivot axis, for
example, enclosing an offset angle of approximately 90 degrees with
respect to one another in relation to a cross-section transverse to
the geometric pivot axis. By means of a corresponding pivoting of
the first insulation-stripping cutter by, for example,
approximately 90 degrees, the second insulation-stripping cutter
can be transferred into its cutting engagement position.
[0030] In a possible embodiment the hand tool can be configured to
be pliers-like, wherein a first insulation-stripping cutter is
formed on working areas of both pliers legs. The working areas can
be formed opposite to pliers handle regions in relation to an
articulation axis of the pliers legs, about which articulation axis
both pliers legs are preferably pivotable, wherein further
preferably the pliers legs can also be connected to one another via
a relevant articulation bolt. In particular, a first
insulation-stripping cutter can be formed in the region of the free
end of each working area, in particular in the region of the inner
side of the working area pointing in the direction of the working
area of the other pliers leg. Such hand tools are known as
so-called insulation-stripping pliers.
[0031] The first insulation-stripping cutters of such
insulation-stripping pliers with pliers legs according to the
previously described designs can be arranged pivotably for possible
pivoting of the same from a cutting engagement position into a
release position, wherein further at least one first
insulation-stripping cutter can be motion-coupled to a second
insulation-stripping cutter, for displacement of the second
insulation-stripping cutter from a release position into the
relevant cutting engagement position. Further, such
insulation-stripping pliers can thus have a pivoting body in a
working area with a first insulation-stripping cutter and a second
insulation-stripping cutter arranged offset in the circumferential
direction. A pivoting body can be provided in the opposite working
area, which merely bears a first insulation-stripping cutter.
[0032] As a result of this configuration, such insulation-stripping
pliers can be used both for stripping a cable insulation
transversely to the longitudinal direction of the cable and also
for stripping the insulation in the longitudinal direction of the
cable.
[0033] Fundamentally, the cutting depth of the first and/or second
insulation-stripping cutter in the insulation is preferably adapted
to the thickness of the insulation cladding. The braids, wires, or
cores to be exposed by the insulation stripping are not damaged by
the cuts using the first and/or second insulation-stripping
cutter.
[0034] The hand tool can also comprise two hollow-body partial
shells, which are arranged pivotably about a common pivot axis,
wherein a first insulation-stripping cutter is formed on the
hollow-body partial shell. In this hand tool configured in such a
manner, this first insulation-stripping cutter can also be designed
according to the previously described explanations, namely
preferably mounted pivotably about a geometric pivot axis from a
cutting engagement position into a release position and back.
[0035] Furthermore both hollow-body partial shells can have such a
first insulation-stripping cutter. Furthermore, a second
insulation-stripping cutter preferably motion-coupled at least to a
first insulation-stripping cutter can be provided in one of the
hollow-body partial shells, wherein in this regard an arrangement
of the first and second insulation-stripping cutter on a common
pivoting body can be provided.
[0036] Furthermore, the hollow-body partial shells can form a
receiving cavity for the cable. This receiving cavity is obtained
in particular in a closed position of the hollow-body partial
shells. The cable to be insulated can be inserted in this receiving
cavity, optionally furthermore passing right through the receiving
cavity entirely, in such a manner that the cable can emerge from
this on both sides at the end of the receiving cavity.
[0037] The first and the second insulation-stripping cutter can be
arranged so that they are assigned to the same receiving cavity, so
that the cable lying in this receiving cavity can lie and remain in
this receiving cavity both for cutting into the insulation in the
circumferential direction and also for stripping the insulation in
the longitudinal direction of the cable.
[0038] The previously described features prove to be particularly
favorable with regard to the method. The cable inserted in the hand
tool, for example, into the receiving cavity or between the working
areas of the pliers legs is grasped in a first method step by the
preferably opposite first insulation-stripping cutters of the two
working areas or of the two hollow-body partial shells, this while
cutting into the insulation of the cable. As a result of turning
the cable about the longitudinal axis, a stripping of the
insulation in the circumferential direction can be achieved,
whereafter a pivoting displacement of the first
insulation-stripping cutter into the release position is achieved
merely by pulling on the cable while maintaining the closed
position of the hand tool, preferably accompanied by pivoting of
the second insulation-stripping cutter into the cutting engagement
position. In this position, this second insulation-stripping cutter
digs into the insulation cladding of the cable in the manner of a
plough in the neighborhood of the circumferential dividing cut,
wherein the cable is displaced from the hand tool or through this
while maintaining the pulling movement. In the course of this
movement resulting in the longitudinal direction of the cable, the
second insulation-stripping cutter cuts into the insulation in the
longitudinal direction of the cable, for example, in the manner of
a plough. This second method step is preferably maintained as far
as the free end of the cable portion pulled through the hand
tool.
[0039] When the tensile loading on the first insulation-stripping
cutter ceases, in particular after the cable has been pulled
completely through the hand tool, the first insulation-stripping
cutter and via this or at the same time as this, the second
insulation-stripping cutter can be restored into the base position,
which base position corresponds to the cutting engagement position
of the first insulation-stripping cutter and the release position
of the second insulation-stripping cutter. This restoring can be
achieved, for example, as a result of a correspondingly acting
spring force.
[0040] The ranges or value ranges or multiple ranges given
hereinbefore and hereinafter also include with regard to the
disclosure all the intermediate values, in particular in 1/10 steps
of the respective dimension, optionally therefore also
dimensionless. For example, the specification up to 15 degrees also
includes the disclosure up to 14.9 degrees, up to 14.8 degrees
etc., the specification more than 45 degrees also includes the
disclosure of more than 45.1 degrees, more than 45.2 degrees, etc.
This disclosure can serve, on the one hand, for delimiting a said
range limit from below and/or above, alternatively or additionally
however for the disclosure of one or more singular values from the
respective specified range.
BRIEF DESCRIPTION OF THE DRAWINGS
[0041] The invention is explained in detail hereinafter with
reference to the appended drawings, which however merely show
exemplary embodiments. A part which is only explained with
reference to one of the exemplary embodiments and in a further
exemplary embodiment is not replaced by another part as a result of
the special feature emphasized here, is therefore also described
for this further exemplary embodiment in any case as a possible
part provided in any case. In the drawings:
[0042] FIG. 1 shows in a perspective view a pliers-like tool in the
form of a cable cutter relating to a first embodiment in a cutting
open position;
[0043] FIG. 2 shows the side view to this;
[0044] FIG. 3 shows the section according to the line III-III in
FIG. 2;
[0045] FIG. 4 shows the section according to the line IV-IV in
[0046] FIG. 2;
[0047] FIG. 5 shows a perspective view of the tool, relating to the
cutting closed position;
[0048] FIG. 6 shows the tool according to FIG. 5 in a perspective
underview;
[0049] FIG. 7 shows a side view toward the tool according to the
diagram in FIG. 2 but relating to the cutter closed position;
[0050] FIG. 8 shows the front view toward the tool according to
arrow VIII in FIG. 7;
[0051] FIG. 9 shows the longitudinal section through the tool
according to the line IX-IX in FIG. 8;
[0052] FIG. 10 shows the section according to the line X-X in FIG.
7;
[0053] FIG. 11 shows the section according to the line XI-XI in
FIG. 7;
[0054] FIG. 12 shows the enlargement of the region XII in FIG.
11;
[0055] FIG. 13 shows the section according to the line XIII-XIII in
FIG. 7;
[0056] FIG. 13a shows in schematic view a locking projection in the
locking position;
[0057] FIG. 14 shows in perspective view the section according to
the line XIV-XIV in FIG. 7;
[0058] FIG. 15 shows a perspective sectional view corresponding to
FIG. 14 but after locking the cutter closure position;
[0059] FIG. 16 shows a side view according to the diagram in FIG. 7
but with displacement of functional jaw parts configured as cable
cutters into a retracted position;
[0060] FIG. 17 shows the section according to the line XVII-XVII in
FIG. 16;
[0061] FIG. 18 shows the section according to the line XVIII-XVIII
in FIG. 16;
[0062] FIG. 19 shows the section according to the line XIX in FIG.
18;
[0063] FIG. 19a shows a diagram according to FIG. 13a but after
displacement of the locking projection into a lowered position;
[0064] FIG. 20 shows the enlargement of the region XX in FIG.
17;
[0065] FIG. 21 shows a diagram according to FIG. 16 but with a
cable to be stripped of insulation received in a receiving
cavity;
[0066] FIG. 22 shows a diagram corresponding to FIG. 17 but
relating to the situation according to FIG. 21;
[0067] FIG. 23 shows the enlargement of the region XXIII in FIG. 22
with engagement of first insulation-stripping cutters into the
insulation of the cable for stripping the insulation transversely
to a longitudinal direction of the cable;
[0068] FIG. 24 shows a diagram substantially corresponding to FIG.
23 but after displacement of the first insulation-stripping cutters
into a release position and displacement of a second
insulation-stripping cutter into a cutting engagement position for
stripping of the insulation in the longitudinal direction of the
cable;
[0069] FIG. 25 shows in a perspective individual view a pivoting
body with a first and a second insulation-stripping cutter;
[0070] FIG. 26 shows in perspective individual view a further
pivoting body with a first insulation-stripping cutter;
[0071] FIG. 27 shows a cable section with stripping of the
insulation carried out in the circumferential direction and a
stripping carried out in the longitudinal direction of the cable
after carrying out an insulation-stripping process using the
insulation-stripping tool;
[0072] FIG. 28 shows a perspective exploded view of the cable
cutter of the first embodiment;
[0073] FIG. 29 shows in schematic view an alternative embodiment of
the arrangement of first and second insulation-stripping cutters
for use in an insulation-stripping tool or a cable cutter;
[0074] FIG. 30 shows the schematic section along the line XXX-XXX
in FIG. 29;
[0075] FIG. 31 shows a schematic diagram substantially
corresponding to FIG. 29 relating to the arrangement of two
pivoting bodies with first and second blades, substantially
corresponding to those of the first exemplary embodiment;
[0076] FIG. 32 shows the schematic section along the line
XXXII-XXXII in FIG. 31;
[0077] FIG. 33 shows the two pivoting bodies with an alternative
configuration of the first insulation-stripping cutters;
[0078] FIG. 34 shows a further alternative configuration of the
first insulation-stripping cutters;
[0079] FIG. 35 shows in perspective view a pliers-like tool in the
form of a cable cutter relating to a further embodiment in a
cutting open position;
[0080] FIG. 36 shows a perspective view according to FIG. 35 but
omitting the handle shells covering the pliers legs;
[0081] FIG. 37 shows the tool according to FIG. 35 in a perspective
exploded view;
[0082] FIG. 38 shows the tool according to FIG. 35 in plan view
omitting the handle shells;
[0083] FIG. 39 shows the pliers-like tool in side view;
[0084] FIG. 40 shows the pliers-like tool in a sectional view along
the line XL-XL in FIG. 39;
[0085] FIG. 41 shows the enlargement of the region XLI in FIG.
40;
[0086] FIG. 42 shows a perspective diagram of the tool
substantially corresponding to FIG. 35 but relating to a cutter
closed position;
[0087] FIG. 43 shows the tool in a view according to FIG. 36 but
relating to the cutter closed position according to FIG. 42;
[0088] FIG. 44 shows a sectional view according to FIG. 40 but
relating to the tool position according to FIG. 42;
[0089] FIG. 45 shows a further perspective view of the pliers-like
tool but using the same as insulation-stripping tool relating to a
closed position of insulation-stripping cutters on the side of the
handle area;
[0090] FIG. 46 shows the plan view to FIG. 45;
[0091] FIG. 47 shows the enlarged sectional view of the region
XLVII in FIG. 46;
[0092] FIG. 48 shows a perspective view of the tool substantially
corresponding to FIG. 45 omitting handle shells but relating to the
open position of the insulation-stripping cutters on the side of
the handle area using the tool as insulation-stripping tool;
[0093] FIG. 49 shows the plan view to the diagram in FIG. 48;
[0094] FIG. 50 shows in view a tool configured as a cable cutter in
a further embodiment;
[0095] FIG. 51 shows the enlargement of the area LI in FIG. 50;
[0096] FIG. 52 shows the area shown in FIG. 51 in a longitudinal
sectional view relating to the pivoting situation according to FIG.
23 of the cutting body to achieve a stripping of the insulation
transversely to the longitudinal direction of the cable using the
first insulation-stripping cutter;
[0097] FIG. 53 shows the pivoting position of the pivoting body
while pivoting the second insulation-stripping cutter to achieve a
stripping of the insulation in the longitudinal direction of the
cable;
[0098] FIG. 54 shows a tool in a further embodiment substantially
consisting of two hollow-body partial shells relating to an open
position;
[0099] FIG. 55 shows a sectional view according to FIG. 52 but
relating to the tool according to FIG. 54.
DESCRIPTION OF THE EMBODIMENTS
[0100] Shown and described, initially with reference to FIG. 1, is
a first embodiment of a pliers-like tool 1 in the form of a cable
cutter, which can also be used at the same time as
insulation-stripping tool 2, wherein the tool 1 is provided with a
first insulation-stripping cutter 14 for stripping of an insulation
58 of a cable 39 transversely to the longitudinal direction of the
cable 1 and with a second insulation-stripping cutter 62 for
stripping in the longitudinal direction of the cable 1. In
particular, the first insulation-stripping cutter 14 is pivotably
mounted.
[0101] The tool 1 forms at one end an insulation-stripping tool 2
and at the other end a cable cutter 2' and in this embodiment
initially and substantially comprises two pliers legs 4 and 5,
which are pivotably interconnected in a scissors articulation 3.
The resulting geometric pivot axis x in the scissors articulation 3
extends substantially perpendicular to a longitudinal extension of
the pliers legs 4, 5.
[0102] Formed on one side of the scissors articulation 3 (with
reference to the longitudinal extension of the pliers legs 4, 5) on
each pliers leg 4, 5 is a functional jaw part 6, 7, here in for the
form of a cable cutter in each case. In the cutting open position
according to FIGS. 1 to 4, a cutting mouth 8 is obtained between
these functional jaw parts 6 and 7.
[0103] The cable cutters can be suitable for moving over one
another in a scissors-like manner for cutting through a cable
inserted in the cutting mouth 8.
[0104] Facing away from the functional jaw parts 6 and 7 the pliers
legs 4 and 5 form handle regions 9 and 10 on the other side of the
scissors articulation bolt 3.
[0105] When viewed in longitudinal extension of the pliers legs 4,
5, a length b of the respective handle region 9, 10 is obtained,
which can correspond to a multiple of the length a of the
functional jaw parts 6, 7 also starting from the pivot axis x. In
the depicted exemplary embodiment, the length b of the handle
regions 9, 10 in the functional jaw part usage position corresponds
to approximately 5 to 7 times, further approximately 6 times the
cutter length a.
[0106] In the region of the free ends 11 of each handle region 9,
10, as is also shown in the depicted exemplary embodiment, pivoting
bodies 12, 13 assigned to each handle region 9, 10 can be provided
with insulation-stripping cutters 14. By using these first
insulation-stripping cutters 14, this tool 1 can be used as
insulation-stripping tool 2.
[0107] The hand tool 1 of the embodiment according to FIGS. 1 to 28
can accordingly be used as desired in each case at the ends of the
pliers legs 4, 5 as a cable cutter 2' or as an insulation-stripping
tool 2.
[0108] Each handle region 9, 10 can initially comprise a handle
shell 15, 16 consisting of a hard plastic, for example.
[0109] Furthermore, each pliers leg 4, 5 can also have a
longitudinal division. In this case, a leg partial region 17 is
arranged firmly inside the associated handle shell 15 or 16 whereas
the second leg partial region 18 carrying the associated functional
jaw part 6 or 7 can be displaced slidably relative to the first leg
partial region 17. This sliding displaceability is directed in
longitudinal extension of the pliers legs 4, 5. A telescopability
of the respective pliers leg 4, 5 is the longitudinal extension of
the leg can thus be obtained, wherein a T-guide or the like can be
given in this respect.
[0110] The second leg partial regions 18 are preferably connected
to one another via the scissors articulation 3, so that a
telescopic lengthening or shortening of one pliers leg at the same
time brings about a corresponding length change of the other pliers
leg in the same manner.
[0111] Furthermore, a possible relative displacement of the
functional jaw parts 6 and 7 formed on the second leg partial
regions 18 relative to the handle shells 15 and 16 can thus be
obtained so that the functional jaw parts 6 and 7 can be displaced
from a protruding position according to FIGS. 1 to 15, which also
corresponds to the usual usage position of the functional jaw parts
6 and 7, for example, for cutting through a cable or the like, into
a retracted position in which the functional jaw parts 6 and 7 are
moved substantially completely into a concealed position,
substantially embraced by the handle shells 15 and 16.
[0112] Both the protruding position and also the retracted position
of the functional jaw parts 6 and 7 can, as is also preferred, be
secured by locking. For this purpose, a button 19, which is
displaceable substantially in the direction of the pivot axis x,
can be further provided on the housing outer side of one of the
handle shells 15 and 16, on which button a latching pin 20
projecting into the shell interior can be formed on the underside.
This latching pin 20 can dip into a longitudinal slot 21 of the
associated second leg partial region 18, which can form a latching
opening 22 enlarged with respect to the slot width at the ends in
each case.
[0113] The latching openings 22 can be adapted according to the
diagrams circumferentially to the cross-sectional shape of the
latching pin 20.
[0114] For cancelling a latching position, the latching pin is
displaceable in alignment of the pivot axis x preferably against
the restoring force of a spring 23 acting on the latching pin 20
into a position in which a waist-like tapered portion 24 of the
latching pin 20, which is adapted to the width of the longitudinal
slot 21, allows a displacement of the latching pin 20 along the
longitudinal slot 21 in the direction of the other latching opening
22.
[0115] The latching position found, as is also preferred, can be
found automatically as a result of the restoring force of the
spring 23.
[0116] As can be seen, for example, from the diagram in FIG. 4, the
second leg partial region 18 also comprising the longitudinal slot
21 with the latching openings 22 can have guide projections 25 on
its inner side, facing the second leg partial region 18 of the
other pliers leg, which in particular in the course of a tool
closing movement can dip into corresponding recesses 26 of the
other second leg partial region 18 possibly positively.
[0117] The telescopically displaceable second leg partial regions
18 with respect to the first leg partial regions 17 can be loaded
in the telescoping direction via a further spring 27, in particular
in the form of a cylinder compression spring. This spring 27, as is
also shown, can be provided in the second leg partial region 18,
which also comprises the longitudinal slot 21 with the latching
openings 22.
[0118] Via the connection to the scissors articulation 3, the
restoring force of the spring 27 also acts on the second leg
partial region 18 of the other pliers leg.
[0119] Via the spring 27 the functional jaw parts 6 and 7 are
loaded in the direction of their protruding position. Accordingly,
this results in a back-displacement of the same into the retracted
position after cancelling the locking against the restoring force
of the spring 27. This must be overcome accordingly.
[0120] Another projection 28, which projects over the dividing
plane E between the pliers legs 4 and 5 or between the handle
shells 15 and 16, is formed on the pliers leg 4. In the tool
closure position, for example, according to FIGS. 10 and 11, this
is accommodated in a recess 26 in the region of the handle shell 16
of the other pliers leg 5. This projection 28 can be used for
locking the tool 1 in the tool closure position, which at the same
time also corresponds to the functional jaw part closure position.
For this purpose, a, for example, thumb-actuatable slider can be
provided on the pliers leg 5 comprising the recesses 29 on the
outside of the relevant handle shell 16, which with a locking
projection 31 that is slidingly displaceable in the direction of
the recess 29, can retracted into a locking groove 32 formed on the
projection 28. The locking groove 31 is in this case directed
transversely to the opening or closing direction of the pliers legs
4 and 5.
[0121] In the tool closed position, the inner surfaces facing one
another or the circumferential faces of the pliers legs 4, 5 facing
one another, in particular the handle shells 15 and 16, abut
against one another (compare FIG. 17).
[0122] Another spring 33 which substantially surrounds the scissors
articulation bolt in the scissors articulation 3 can act on the
pliers legs 4 and 5 in such a manner that these are loaded
tendentially into an open position by the spring 33 according to
the diagrams 3 and 4, for example.
[0123] The displacement of the pliers legs 4 and 5 for example into
a cutting position of the functional jaw parts 6 and 7 configured
as cable cutters or into a tool closure position takes place
accordingly contrary to the force of the spring 33.
[0124] A further possible locking of the pliers legs 4 and 5 with
respect to one another can be made possible by a fixing part 34
mounted pivotably parallel to the pivot axis x, which part can be
brought outside a handle shell 15 with a side arm 35?? and a
locking projection 36 provided at the end of the side arm behind a
locking shoulder 37 in the region of the other handle shell 16.
[0125] In order to use the hand tool 1 as an insulation-stripping
tool 2, the functional jaw parts 6 and 7 should preferably be moved
into their retracted position. In order to prevent use of the
insulation-stripping tools when the functional jaw parts 6 and 7
remain in the protruding position, a locking projection 38 can be
provided, which in the functional-jaw-part protruding position
projects into the dividing plane E in a hindering manner such that
a movement of the pliers legs 4 and 5 into the contact
position--tool closure position--is prevented. This situation is
shown in a simplified manner in FIGS. 13 and 13a.
[0126] In the diagrams the locking projection 38 is aligned
substantially vertically. This corresponds to the position of the
locking projection 38 in the functional-jaw-part protruding
position. The facing front faces of the handle shells 15 and 16
cannot come into their contact position as a result of the rising
locking projection 38. However, this contact position is necessary
for the correct use of the pivoting bodies 12 and 13 comprising the
first insulation-stripping cutters 14 for stripping the insulation
from the cable 39.
[0127] In this position, the locking projection 38 can also engage
in a receiving cavity 45 in such a manner that a cable 39 to be
stripped of insulation can be prevented from being introduced into
the tool 1 through this receiving cavity 45 for carrying out the
insulation-stripping process.
[0128] In the locking position, for example, according to FIGS. 11
and 13, a gap S is obtained in particular in the region of the free
ends 11 as a result of the locking projection 38 pivoted in a
perturbing manner into the dividing plane E.
[0129] The closure position is required for correct insulation
stripping of a cable 39, which can only be achieved in the
functional-jaw-part retracted position.
[0130] With retraction of the functional jaw parts 6 and 7, a
pivoting displacement of the locking projection 38 is brought about
via a control side arm 40 and a control cam 41 formed in this side
arm. This locking projection sits with a control cam 42 in the
control cam 41 and is pivotable about an axis 43 fixed in the
associated handle shell 16 or the associated pliers leg 5. The
relevant geometric axis is aligned transversely to the pivot axis x
of the pliers legs 4 and 5.
[0131] FIGS. 19 and 19a show the pivoting position of the locking
projection 38 after displacement of the functional jaw parts 6 and
7 into the retracted position. As can be seen, a pivoting
displacement is achieved here via the control cam 41 which allows
abutment of the front faces of the handle shells 15 and 16 facing
one another or the pliers legs 4 and 5. In this position, the
locking projection 38 can also be pivoted out of the receiving
cavity 45.
[0132] With displacement of the functional jaw parts 6 and 7 back
into their protruding position, in particular the control side arm
40 can be displaced back into its base position, for example, under
spring loading, this being accomplished while raising the locking
projection 38 via the control cam 41.
[0133] The pivoting bodies 12 and 13 can, as is also shown, each be
held pivotably on a block-like insert 44. These inserts 44 can each
be fastened in the region of the free ends 11 on the inside of the
handle shells 15 and 16, wherein further the inserts 44 in the
contact position, which corresponds to the tool closure position,
can form a receiving cavity 45. The receiving cavity 45 extends
substantially in the direction of longitudinal extension of the
pliers legs 4, 5 or in the direction of longitudinal extension of
the tool 1 overall.
[0134] Furthermore the receiving cavity 45 extends over a partial
region of the handle regions 9, 10, which can correspond to
approximately a quarter to a third of the total length of the
pliers legs 4, 5.
[0135] The previously described projection 28 can be formed on one
of the inserts 44 and the relevant recess 29 on the opposite insert
44.
[0136] The pivoting bodies 12 and 13 can each be arranged at the
end of the inserts 44, assigned to the free end 11, this further
preferably in the region of a notching 47 of the inserts 44. In
this step-like notching the pivoting bodies 12 and 13 find a guide
which allows a pivoting of the pivoting bodies 12 and 13 about a
pivot axis y. This guide can, as is also preferred, be
substantially a base-side guide. A top-side guide of the pivoting
bodies 12, 13 can be achieved by tabs 48, which can be fastened
onto the inserts 44.
[0137] The pivot axis y of the pivoting bodies 12 and 13 preferably
extends in alignment of the pivot axis x in the region of the
scissors articulation 3.
[0138] Preferably the first insulation-stripping cutters 14 facing
one another in a base position also extend in the direction of
extension of the pivot axis y. These are fixed on the circumference
of the respective pivoting body 12, 13 on these.
[0139] The first insulation-stripping cutters 14 can, as shown,
have a rectilinear cutting edge 49 running parallel to the pivot
axis y but alternatively also, as is further shown in FIGS. 33 and
34, for example, an arcuate profile for embracing a circumferential
partial region of the cable 39 or also a V-shaped notch-like
profile.
[0140] The handle regions 9 and 10 can comprise with regard to
their longitudinal extension a first longitudinal portion 50 and a
second longitudinal portion 51, wherein the second longitudinal
portion 51 is assigned to the free end 11. As can be seen in
particular from the longitudinal sectional view in FIG. 9, a
parallel displacement of the longitudinal portions 50 and 51 with
respect to one another can be obtained, wherein the two
longitudinal sections 50 and 51 substantially each run in
longitudinal extension of the pliers legs 4 and 5.
[0141] The degree of offset of the longitudinal portions 50 and 51
in the direction of the pivot axis x can be adapted to a largest
cable diameter usually permissible for this tool 1.
[0142] The two longitudinal portions 50 and 51 go over into one
another in a region of curvature 52. An opening 53 is provided in
this region of curvature 52. This forms the opening of the
receiving cavity 45 in the direction of the first longitudinal
portion 50 while a further opening 55 is provided rearward of the
handle shells 15 and 16 in the region of a relevant front wall 54.
Accordingly, an opening on both sides of the receiving cavity 45
when viewed in longitudinal extension is obtained.
[0143] The pivoting bodies 12 and 13 can substantially be arranged
in a region between the receiving cavity formed by the inserts 44
and the opening 55 on the front wall side.
[0144] Further openings 56 can be provided below the opening 55 in
the front wall 54, assigned to rigid insulation-stripping blades 57
fastened on the inserts 44, in particular for stripping the
insulation from cores.
[0145] For stripping the insulation from a cable 39 this is
inserted into a receiving cavity 45 (see, for example, FIGS. 21 and
22). An end optionally guided through the receiving cavity 45 or a
cable portion, after passing through the opening 53, can rest on
the facing surface of the pliers legs 4 and 5, for which the handle
shells 15 or 16 can optionally have a bead-like recess running in
the longitudinal direction.
[0146] With closure of the pliers legs 4 and 5, wherein a changed
lever ratio is established in the retracted position of the cable
cutters 6 and 7, as a result of a shortening of the length b
between the pivot axis x and the free end 11 as a result of the
telescoping, the first insulation-stripping cutters 14 cut into the
insulation 58 in a secant-like manner. This incision can be
accomplished as a result of the arrangement of two first
insulation-stripping cutters 14 diametrically opposite one
another.
[0147] By turning in the direction of the arrow c of the cable 39,
a stripping of the insulation 58 can be achieved transversely to
the longitudinal direction of the cable 1 and therefore in the
circumferential direction.
[0148] In particular with longer portions to be stripped of
insulation, it proves to be favorable to also strip the portion to
be stripped in the longitudinal direction of the cable 1. This is
accomplished in the proposed insulation-stripping tool 2 in a
manner favorable for handling after carrying out the stripping in
the circumferential direction by pulling on the cable 39 in
direction d.
[0149] As a result of this pulling, the first insulation-stripping
cutters 14 are pivoted from the cutting engagement position
(compare FIG. 23) into a release position according to FIG. 24 as a
result of the pivotable mounting of the pivoting bodies 12 and 13,
wherein the pivot axis y of the pivoting bodies 12 and 13 runs
outside and at a distance from the insulating cladding.
[0150] The pivoting displacement of the first insulation-stripping
cutters 14 can, as is also preferred, be accomplished merely by
acting on the first insulation-stripping cutters 14 via the cable
39 or the insulation 58 in the course of the loading on the cable
39 in the direction of tension.
[0151] Furthermore, this pivoting displacement of the first
insulation-stripping cutters 14 about their pivot axis y can be
accomplished against the force of a restoring spring 59 which urges
the pivoting bodies 12 and 13 into their base position. This base
position is preferably stop-limited. For this purpose, the pivoting
bodies 12 and 13 have a stop shoulder 60 diametrically opposite the
first insulation-stripping cutters 14 in relation to the
cross-section according to FIG. 23, which in the base position
according to FIG. 23 can come up against a stop surface 61 in the
handle region 9 or 10.
[0152] With pivoting of the first insulation-stripping cutters 11
into the release position, a second insulation-stripping cutter 62
is preferably displaced into its cutting engagement position. In
this cutting engagement position the second insulation-stripping
cutter 62 dips into the insulation 58 of the cable 39.
[0153] In this case, the second insulation-stripping cutter can be
arranged on one of the pivoting bodies, here preferably the
pivoting body 13, according to the exemplary embodiment shown in
FIGS. 1 to 28, as is further also shown in FIGS. 31 and 32. Thus,
in this embodiment, this second insulation-stripping cutter 32 is
pivotable about the same pivot axis y.
[0154] The second insulation-stripping cutter 62 can in this case,
when viewed in the circumferential direction of the relevant
pivoting body 13, be arranged circumferentially offset to the first
insulation-stripping cutter 14. A pivoting of the pivoting body by
approximately 90 degrees results in a change of the first
insulation-stripping cutter into a release position and a change of
the second insulation-stripping cutter 62 from its release position
into the cutting engagement position.
[0155] In order to ensure a secure hold of the first
insulation-stripping cutters 14 in the course of a radial
insulation stripping, these are in particular arranged in relation
to their cutting edges 49 cutting into the insulation 58 with
reference to the direction of tension d at a distance f behind the
pivot axis y (compare FIGS. 29 and 31).
[0156] Whereas the first insulation-stripping cutter 14 or its
cutting edge 49 extends in a plane directed in the direction of the
pivot axis y, the cutting edge 63 of the second
insulation-stripping cutter 62 can run approximately in a sickle
shape in a plane transverse to the cutting plane of the first
insulation-stripping cutter 14 so that as a result of the tensile
loading on the cable 39, a digging of the second
insulation-stripping cutter 62 into the insulation 58 can be
achieved.
[0157] The cutting engagement position of the second
insulation-stripping cutter 62 or the release position of the first
insulation-stripping cutter 14 can also be stop-limited. For
example, as is also shown, the first insulation-stripping cutter 14
can enter in the handle region 9, 10 against a correspondingly
aligned second stop surface 61 (compare, for example, FIG. 24).
[0158] Alternatively to the arrangement of the first and second
insulation-stripping cutter on a common pivoting body, according to
the diagram in FIG. 29, each insulation-stripping cutter can also
be assigned a relevant pivoting body. Thus, for example, the first
insulation-stripping cutter 14 can be fastened to a separate
pivoting body 13 while the second insulation-stripping cutter 62
can be formed on a second pivoting body 13'. The two pivoting
bodies 13 and 13' can also be motion-coupled via a rigid connection
65, so that each pivoting movement of one pivoting body 13 or 13'
results in a corresponding pivoting movement of the further
pivoting body 13' or 13.
[0159] In this case, accordingly two geometric pivot axes y and y'
are obtained for the two insulation-stripping cutters 14 and 62,
which pivot axes y and y' can run in the same direction.
[0160] As a result of an insulation-stripping tool 2 configured in
such a manner or a tool 1 having such an insulation-stripping tool
2, a cutting pattern of the cable 39 according to FIG. 27 can be
established. In the area of its insulation, the cable 39 has a
circumferential cut 66 caused by the first insulation-stripping
cutters 14 and a longitudinal cut 67 running in the longitudinal
direction of the cable 1, caused by the second insulation-stripping
cutter 62.
[0161] The longitudinal cut 67 can be carried out continuously as
far as the free end of the cable 39. Facing the circumferential
section 66, a connecting web 68 having a length of, for example,
0.5 as far as, for example, 2 mm can be obtained, which tears open
when peeling away the insulation section.
[0162] FIGS. 35 to 49 show another embodiment of a tool 1. This
also offers on one side of the scissors articulation 3 the
possibility of the tool 1 for pliers-like cutting actuation,
further for example, for use as cable cutter 2' and on the other
side of the scissors articulation 3, for use as
insulation-stripping tool 2.
[0163] In this embodiment also the functional jaw parts 6 and 7,
here in the manner of cable cutters, are moved about the pivot axis
x during usual use of the tool 1 with pliers legs 4 and 5 covered
with handle shells 15 and 16. A leg spring 33 provided here in the
region of the scissors articulation 3 brings about a spring loading
in the direction of a cutting mouth open position according to the
diagrams in FIGS. 35, 36 and 38 to 40.
[0164] In the region of the handle-side free ends of the pliers
legs 4 and 5, in this embodiment also to form an
insulation-stripping tool 2, pivoting bodies 12 and 13 with first
insulation-stripping cutters 14 and a second insulation-stripping
cutter 62 are provided substantially according to the previously
described exemplary embodiment in an offset second longitudinal
section 51.
[0165] In this case, the pliers leg 5 is formed in one piece and
preferably of the same materials as the functional jaw part 7,
wherein further this pliers leg 5 is also formed in one piece
relative to a leg portion facing the scissors articulation 3 and a
leg portion assigned to the free handle region.
[0166] The further pliers leg 4 on the other hand is preferably
formed in two parts, in this case substantially forming a pliers
partial leg 71 assigned to the scissors articulation 3 and formed
in one piece with the relevant functional jaw part 6 and a pliers
leg 72 on the side of the handle area.
[0167] The two pliers partial legs 71 and 72 can, as is also
preferred, be connected to one another via a pivot bolt 73, whose
geometric pivot axis v is preferably aligned parallel to the pivot
axis x in the scissors articulation 3.
[0168] Further the pliers partial leg 71 preferably extends on both
sides of the pivot bolt 73, wherein on the one side of the pivot
bolt 73 the pliers partial leg 71 goes over into the functional jaw
part 6 in the region of the scissors articulation 3 and on the
other side of the pivot bolt 73 this forms a free side arm with an
end-side and open-edged first blocking recess 74.
[0169] The first blocking recess 75 formed in a basic outline, for
example, according to FIG. 38 in a step shape serves to cooperate
with a first blocking projection 75, which is articulated pivotably
to the pliers partial leg 72 on the side of the handle region. The
relevant geometric pivot axis w extends preferably parallel to the
alignment of the pivot axis v or to the pivot axis x of the
scissors articulation 3.
[0170] The first blocking projection 75 can be formed in the manner
of a pivotable bolt, which is pivotable from a latching position to
the first blocking recess 74 into a release position and back
deliberately by the user. For this purpose, a rotating handle 76
can be arranged at one free end of an axial body, which is
connected nonrotatably to the first blocking projection 75 and
which centrally receives the geometric axis of rotation w and
passes through the pliers partial leg 72, which handle is exposed
and can be gripper on the wall outer side of the handle shell 15
completely overlaying the pliers leg 4.
[0171] Furthermore, the first blocking projection 75 is
spring-loaded in the direction of the first blocking recess of the
pliers partial leg 71 on the scissors articulation side and thus in
the direction of the latching and blocking position. For this
purpose, according to the depicted embodiment a spring 77 in the
manner of a leaf spring can be provided, which is supported on a
leg-side extension 78 (compare, for example, FIG. 36).
[0172] In the blocking position shown in FIGS. 35, 36 and 38 to 44,
in which the first blocking projection 75 engages in the blocking
recess 74 of the pliers partial leg 71 on the side of the handle
region, a force transfer connection is obtained between the pliers
partial legs 71 and 72 in the direction of the cutting mouth
closure position according to the diagrams in FIGS. 42 to 44. A
usual displacement of the pliers legs 4 and 5 toward one another
accordingly brings about a pivoting displacement of the functional
jaw parts 6 and 7 in the direction of the closure position, this
against the force of the spring 33 provided in the scissors
articulation 3.
[0173] In the stop-limited cutting mouth closure position, for
example, according to FIG. 4, the free ends of the handle regions 9
and 10 of the pliers legs 4 and 5 facing away from the cutting
mouth 8 are still distanced so far from one another that no
undesired clamping or cutting action can occur in this region. The
selected blocking position between first blocking projection 75 and
first blocking recess 74 defines the use of the tool 1 in this case
merely as cable cutter 2'.
[0174] For the specific use of the tool 1 as insulation-stripping
tool 2, the first blocking projection 75 is rotatably displaced via
the rotating handle 76 against the restoring force of the spring 77
from the blocking position with the first blocking recess 74,
whereafter, optionally initially while retaining the blocking
release position of the blocking projection 75, the pliers partial
leg 72 on the side of the handle region, which has been released
from blocking is pivotable freely about the pivot axis v of the
pivot bolt 73.
[0175] The pliers partial leg 72 on the side of the handle region
is thus pivotable so far in the direction of the opposite pliers
leg 5 that the receiving cavity 45 provided for receiving the cable
39 to be stripped of insulation is obtained according to the
previously described embodiment. The first insulation-stripping
cutters 14 which are preferably also pivotable here are brought
into a position in which these can dip into the insulation 58 of
the cable 39 lying in the receiving cavity 45 in a cutting
manner.
[0176] Otherwise, the basic function and operating mode of the
first and second insulation-stripping cutters 14 and 62, further in
particular also with regard to their pivoting bodies 12 and 13, is
substantially the same as the operating mode depicted with regard
to the previously described embodiments.
[0177] The conversion of the tool 1, for example, from a cable
cutter 2' into an insulation-stripping tool 2, can be performed,
for example, in a closed cutting mouth position, further for
example, from, the stop-limited cutting mouth closed position
according to FIG. 44.
[0178] In an advantageous manner, in this second pivoting position
of the pliers partial leg 72 on the side of the handle region
relative to the pliers partial leg 71 on the scissors articulation
side, a blocking of the cutting mouth 38 is achieved so that the
functional jaw parts 6 and 7 cannot pivot into an open position, in
particular in a configuration of the same for cutting
actuation.
[0179] This is substantially achieved by a second blocking
projection 79 of the pliers partial leg 72 on the side of the
handle region, which can dip into a second blocking recess 80 of
the opposite pliers leg 5 in this second pivot position (compare
FIGS. 46, 47 and 49).
[0180] This second blocking position in the configuration of the
tool 1 as an insulation-stripping tool 2 is further preferably
spring-loaded, wherein in an advantageous manner the spring 77
acting on the blocking projection 74 abutting in this alignment
against a facing flank 81 of the pliers leg 71 on the scissors
articulation side is used. The pliers partial leg 72 on the side of
the handle region, articulated to the pliers partial leg 72 on the
scissors articulation side is loaded via this spring support in the
direction of a closing potion of the receiving cavity 45, wherein
the resulting rotational loading at the same time brings about a
loading of the second blocking projection 79 into the blocking
position 79.
[0181] The engagement of the second blocking projection 79 into the
second blocking recess 80 allows a relative pivoting movement of
the pliers partial leg 72 on the side of the handle region about
the pivot axis v relative to the other pliers leg 5 (compare, for
example, FIGS. 46 and 49) without the blocking between second
blocking projection 79 and second blocking recess 80 being
cancelled (compare FIG. 47). Accordingly, over the depicted and
described pivoting path of the pliers partial leg 72 in the
insulation-stripping configuration, even the cutting mouth 8
remains in a closed position or does not reach any open position so
that when the tool 1 is used as an insulation-stripping tool 2,
there is no risk of clamping or cutting on the side of the opposite
end, which can be used for example as a cable cutter 2' and the
functional jaw parts 6 and 7 provided here.
[0182] FIGS. 50 to 53 show an embodiment of an insulation-stripping
tool 2 in pliers form. In this embodiment, each pliers leg 4, 5
substantially starting from the scissors articulation 3 forms on
one side handle regions 9, 10 and on the other side of the scissors
articulation 3 a working region. According to the previously
described exemplary embodiment, on the one hand a pivoting body 12
with a first insulation-stripping cutter 14 and on the other hand a
pivoting body 13 with a first insulation-stripping cutter 14 and a
second insulation-stripping cutter 62 can be arranged in the
working region. According to the previously described embodiment,
these two pivoting bodies 12, 13 can be held pivotably about pivot
axes y, which pivot axes y can run in the same direction to the
pivot axes x of the scissors articulation 3.
[0183] The largest dimension of the opening cross-section in the
insulation-stripping region is adjustable by means of adjusting
means 69.
[0184] According to the diagram in FIG. 54, the hand tool can also
comprise two half-body partial shells 70, which can be arranged
pivotably about a common pivot axis z and can be connected to one
another. The two half-body partial shells 70 are pivotable with
respect to one another, whereafter a receiving cavity 65 can be
obtained between the half-body partial shells 70 in the region of
the mutually facing inner sides, which cavity can be configured to
be open on both sides.
[0185] First insulation-stripping cutters 14 can be provided in the
region of one end of the receiving cavity 45, which, according to
the previously described exemplary embodiments, can be arranged on
pivoting bodies 12, 13, wherein further according to the diagram in
FIG. 55 a pivoting body 13 can comprise a second
insulation-stripping cutter 62 arranged offset to the first
insulation-stripping cutter 14.
[0186] The preceding explanations serve to explain the inventions
covered overall by the application, which independently further
develop the prior art at least by the following feature
combinations in each case, wherein two, several or all these
feature combinations can also be combined, namely:
[0187] An insulation-stripping tool, characterized in that the
first insulation-stripping cutter 14 is mounted pivotably for
movement between a cutting engagement position and a release
position.
[0188] A cutting part, characterized in that a first
insulation-stripping cutter 14 and a second insulation-stripping
cutter 62 are formed on a pivoting body 12, 13, 13' pivotable about
a pivot axis y, wherein the first insulation-stripping cutter 14 is
configured for a cut in the direction of the pivot axis y and the
second insulation-stripping cutter 62 is configured for a cut
transversely to the pivot axis y.
[0189] An insulation-stripping tool or a cutting part,
characterized in that a pivot axis y of the first
insulation-stripping cutter 14 runs transversely to the
longitudinal direction 1 of the cable.
[0190] An insulation-stripping tool or a cutting part,
characterized in that the pivot axis y of the first
insulation-stripping cutter 14 does not intersect the cable 39.
[0191] An insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter is
movable itself between the cutting engagement position and the
release position by action on the insulation-stripping cutter
14.
[0192] The insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter 14 has
an arcuate course for covering a circumferential partial area of
the cable 39.
[0193] An insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter 14 and
second insulation-stripping cutter 62 are pivotable about different
pivot axes y, y'.
[0194] An insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter 14 and
second insulation-stripping cutter 62 are pivotable about the same
pivot axis y.
[0195] An insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter 14 and
second insulation-stripping cutter 62 are formed on the same
pivoting body 13.
[0196] An insulation-stripping tool or a cutting part,
characterized in that the first insulation-stripping cutter 14 and
second insulation-stripping cutter 62 are configured to be offset
in the circumferential direction.
[0197] An insulation-stripping tool or a cutting part,
characterized in that the hand tool is configured to be
pliers-like, wherein a first insulation-stripping cutter 14 is
formed on working areas of both pliers legs 4, 5.
[0198] An insulation-stripping tool or a cutting part,
characterized in that the hand tool comprises two hollow-body
partial shells 69, which are arranged pivotably about a common
pivot axis z, and that a first insulation-stripping cutter 14 is
formed on the hollow-body partial shell 69.
[0199] An insulation-stripping tool or a cutting part,
characterized in that the hollow-body partial shells 69 form a
receiving cavity 45 for the cable 39 and that the first
insulation-stripping cutter 14 and the second insulation-stripping
cutter 62 are arranged so that they are assigned to the same
receiving cavity 45.
[0200] A method, characterized in that the first
insulation-stripping cutter (14) is brought into engagement with
the insulation 58 of the cable 39 and is brought from the cutting
engagement position into its release position by pulling on the
cable 39.
[0201] A method, characterized in that with the pivoting of the
first insulation-stripping cutter 14 into the release position the
second insulation-stripping cutter 62 is at the same time brought
into its engagement position.
[0202] All the disclosed features are (for themselves but also in
combination with one another) essential to the invention. The
disclosure content of the relevant/appended priority documents
(copy of the preliminary application) is herewith included in the
disclosure of the application in its entire content, also for the
purpose of incorporating features of these documents in claims of
the present application. The dependent claims characterize with
their features, even without the features of a referenced claim,
independent inventive further developments of the prior art, in
particular in order to make divisional applications on the basis of
these claims. The invention specified in each claim can
additionally comprise one or more of the features specified in the
preceding description, in particular provided with reference
numbers and/or in the reference list. The invention also relates to
embodiments in which individual ones of the features mentioned in
the preceding description are not implemented, in particular
insofar as they are clearly dispensable for the respective usage
purpose or can be replaced by other means having technically the
same action.
REFERENCE LIST
[0203] 1 Tool [0204] 2 Insulation-stripping tool [0205] 2' Cable
cutter [0206] 3 Scissors articulation [0207] 4 Pliers leg [0208] 5
Pliers leg [0209] 6 Functional leg [0210] 7 Functional leg [0211] 8
Cutting mouth [0212] 9 Handle region [0213] 10 Handle region [0214]
11 Free end [0215] 12 Pivoting body [0216] 13 Pivoting body [0217]
13' Pivoting body [0218] 14 First insulation-stripping cutter
[0219] 15 Handle shell [0220] 16 Handle shell [0221] 17 First leg
partial region [0222] 18 Second leg partial region [0223] 19 Button
[0224] 20 Latching pin [0225] 21 Longitudinal slot [0226] 22
Latching opening [0227] 23 Spring [0228] 24 Portion [0229] 25
Projection [0230] 26 Recess [0231] 27 Spring [0232] 28 Projection
[0233] 29 Recess [0234] 30 Slider [0235] 31 Locking projection
[0236] 32 Locking groove [0237] 33 Spring [0238] 34 Fixing part
[0239] 35 Side arm [0240] 36 Locking projection [0241] 37 Locking
shoulder [0242] 38 Locking projection [0243] 39 Cable [0244] 40
Control side arm [0245] 41 Control cam [0246] 42 Control cam [0247]
43 Axis [0248] 44 Insert [0249] 45 Receiving cavity [0250] 46
Partial region [0251] 47 Notching [0252] 48 Tab [0253] 49 Cutting
edge [0254] 50 First longitudinal section [0255] 51 Second
longitudinal section [0256] 52 Curvature region [0257] 53 Opening
[0258] 54 Front wall [0259] 55 Opening [0260] 56 Opening [0261] 57
Insulation-stripping blade [0262] 58 Insulation [0263] 59 Restoring
spring [0264] 60 Stop shoulder [0265] 61 Stop surface [0266] 62
Second insulation-stripping cutter [0267] 63 Cutting edge [0268] 64
Stop surface [0269] 65 Rigid connection [0270] 66 Circumferential
cut [0271] 67 Longitudinal cut [0272] 68 Connecting web [0273] 69
Adjusting means [0274] 70 Half-body partial shell [0275] 71 Pliers
partial leg [0276] 72 Pliers partial leg [0277] 73 Pivot bolt
[0278] 74 First blocking recess [0279] 75 First blocking projection
[0280] 76 Rotating handle [0281] 77 Spring [0282] 78 Extension
[0283] 79 Second blocking projection [0284] 80 Second blocking
recess [0285] 81 Flank [0286] a Length [0287] b Length [0288] c
Direction of rotation [0289] d Direction of tension [0290] f
Distance [0291] Cable longitudinal direction [0292] v Pivot axis
[0293] w Pivot axis [0294] x Pivot axis [0295] y Pivot axis [0296]
y' Pivot axis [0297] z Pivot axis [0298] E Dividing plane [0299] S
Gap
* * * * *